Selective means for switches.



G. B. GRAY.

SELECTIVE MEANS FOR SWITCHES. APPLICATION FILED JULY 25. 1914. RENEWED MAY 16.1916.

Patented Dec. 19, 1916;

3 SHEETS-SHEET I IN VE/V T011? ATTORNEY G. B. GRAY.

SELECTIVE MEANS FOR SWITCHES. I

APPLICATION FILED JULY 25. 1914. RENEWED MAY 16'. l9l6.

Patented Dec. 19,1916.

3 SHEETS-SHEET 2- N mm,

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25 p trolled-by the position of the switch for de- GARDNER B. GRAY, F PITTSBURGH, PENNSYLVANIA.

SELECTIVE MEANS FOR SWITCHES.

ori inal application filed April 13, 19 14, se -ial No. 832,722. Divided and this application filed Jul 25, line,- 1 serial no. 853,239. nenewea Ma s, 1916. Serial no. 97,980.

H To all whom it may concern:

a citizen of the United States, and a'resi dent of Pittsburgh, inthe county of Allegheny and State of Pennsylvania, have invented certain new and useful Improve.

'ments in Selective Means for Switches, of

which the following is a specification.

The present invention relates to power actuated switches used at railroad terminals orv the like, the nature of the power used being immaterial, and has for its main ob ject selective means whereby the switch or switch points may be moved in opposite directions from a motor. The present application is a division of application Serial No. 832,722, filed April 18, 1914, renewed as Serial No. 1713, filed Jan. 11, 1915, andrenewed as Serial No. 42,647, filed July 29, 1915.

- One feature of the invention resides in e motor rotating in onedirection only together with selective means whereby the switch may be moved in opposite directions from' the motor, there being means contermining the direction of movement inl-.

partedjto the switch by the selective means;

'Any suitable selective means may be utilized, but preferably, as'herein disclosed, a difierential transmission mechanism forms ;a part of the driving connections between the-.motor'and the switch, and .ma utilized for selectively operating 't e transets are mission mechanism. g

The invention further resides-1n alcertaln relatlon between the selective: means and an auxiliary locking device for the switch. I

i the In the accompanying drawings the invention is embodied in a concrete and preferred scope of the invention.

--In, the said drawingsz Figue 1"is' a diagrammatic view of a preferredform of a power actuated systemof switch control embodying the invention. Fig.2 is a plan view of the switch and switch machine. Fig. 3 is-af longitudinal sectional view of and the crank for operating the same. I Fig.

i 14 is the actuating means for the locking the switch.

difierential transmission mechanism. 'Fig. 4 is a detail view of the throw-rod corresponding parts in the several views,

1 indicates the switch or switch points,

2 is the lock-rod and 3 the throw-rod, t0 both of said rods being suitably connected to saidswitch a well-known manner.

4 the motor, 5 the difl'erential trans mlsslon mechanism, 6 the driven shaft having the crank 7 engaging a suitable notch 66 8 1n the throw-rod 3'.

10 is a controller actuated by means of Y the cam 11 on the shaft 6 so as'to'move in accordance with the movement imparted to I the throw-rod: r 76 member 13 of the lock-rod, hereshown as a double solenoid. y I I 7 1 15 is the auxiliary locking device for the locking member of the lock-rod. 22 is a switch lever and 24 isalcontrolling means actuated-by the switch lever.

. 25 is the source of power for operating noid 14 through the leads 200 in a manner 85..

that need not be described. The movement ;to the left of the member13 also moves the notch 102' out of the way of the lower end of the plunger 80, so that when the lat,-

ter is, subsequently "raised, the switcll will not be locked. i When it is desired to throw the switch, the

' opera-tor moves the lever 22 to thele'ft, thereby moving the contact 64 out of engagement with the springs 65 and 66 of the controlling m'eans 24 and placing contact 64 between the springs 67 ja'nd68; 'The'movement of the contact. 64 into the position designated will establish a circuit as follows: From battery 25, bus-bar 31,'conduct0r 69, conductor 70 spring 67, contact 64, spring 68, conductor 71', spring 72-, contact 73, spring 74 of the controller 10, conductor 75, reverse magnet. 76,:conductor 77 to auxiliary locking de vice 15, and thence to common return 39 and battery 25. .The reverse magnet 76 forms a part of'the selective means between the motor and the driven shaft 6 and when unlocked thy moving the so;

motor 4; to drive the shaft 6 in a certain locking device causes the core 80 thereof to be moved upward, thereby moving the v contact..81 into engagement with the springs 8 1 and 85, and at the same time causing the contact 86 to bridge the s ace between the springs 87 and 88. Since t e member 13 has previously been moved to the left, the core 80 will not engage the notch 102. .This establishes a circuit as follows: from the conductor 77 to conductor89, spring 84:, contact 81, spring 85, conductor 90, motor 4, motor field 91, conductor 92, spring 88, contact 86, spring 87 and common return 39,

back to battery 25. This causes current to flow through the motor 4 which by its rotation and by means of the reverse magnet 76 and the difierential transmission mechanism,

causes the shaft 6 to be driven in a certain direction whereby the crank 7 engaging with the notch 8 of the throw-rod 3 moves the latter and throwsthe switch to reverse position. The rotation of the shaft 6 causes the cam 11 to actuate the controller 10, .whereby the contact 73 is moved to the right, Fig. 1, and is out of engagement with the springs 7 2-and 7 1, thereby cutting on all power between the source 25 and the controlling means 2d and reverse magnet 76 and auxiliary locking device 15, whereby 76 and 15, are both denergized. This releases the band 78 from its clutched position and destroys the circuit through the motor. The movement of the switch further .places the normal magnet 108 ready to be energized by'moving the contact 99 into engagement.

with the springs 100 and 101 in the controller 10.

It will be observed that had current been supplied to the motor 4:. before the locking dog 56 had released the lock-rod 2, the energization of the auxiliary locking device 15 would have caused the lower end of the core 80 to'have engaged in the notch 102 of from reverse to normal, the left hand side of solenoid 14 is again energized and the locking member 13 withdrawn.

When it is desired to move the switch from the reverse position to the normal position, the eperator moves the switch lever 22 to the right and breaks the contact 64 between the springs 67 and 68, and causes it to bridge springs 65 and 66, thereby establishing the rename following circuitz from battery 25- to. bus bar 31, conductor 69, spring 65, contact 641,

spring 66, conductor 106, spring 1031, contact 99, spring 100, conductor107, to normal magnet 108, conductor 77, to auxiliary locking device 15, and thence to common return 39, back to battery 25. This energizes the said normal magnet 108, causing the band 109 to be tightened on the pulley 110, and further causes the energization of the auxiliary locking device 15 and an upward movement of the core 80. This establishes the following circuit: from conductor 77, to conductor 89, spring 84%, contact 81, spring85, conductor 90, to'motor t,

motor field'91, conductor 92, spring 88, contact 86, spring 87, and coon return 39. This rotates the motor 4: which by means of the diflerential transmission mechanism 5 and the normal magnet 108 causes the driven l I and 101 and thus cutting 08' power he tween the controlling means 24, and the normal magnet 108 and the auxiliary locking device 15, as well as the motor 4:. The right hand side of solenoid, 141 is now againlen- I 'ergized and theswitch locked.

Shouldit be attempted to move the throw rod 3, say after sawing through or otherwise breaking the lock-rod 2, then the very act of moving the said throw-rod will cause a movement of the controller 10. Ti. the switch were in the normal position and is moved to the reverse position, the. contact 99 will bridge the. s rings 100 and 101 and a circuit will be esta lished from battery 25, bus bar 31, conductor 69, spring 65, contact 6%, spring 66, conductor 106, spring 101, contact 99, spring 100, conductor 107, nor- 7 mal magnet 108, conductor 77, auxiliary locking device 15 to common return 39, back to battery 25. This circuit would in turn, by reason of theenergization of the auxiliary locking device 15, cause a circuit to be established through the motor as follows:

conductor 7 7 conductor 89, spring 84, contact 81, spring85, conductor 90, motor 4-, motor field 91, conductor 92, spring 88, contact 86,-spring 87 and common'return 39.

'Theefi'ect ofthis circuit would be to cause a movement of the switch back to its normal position. Similarly if the switch is in the reverse position and it should be attempted to move it to the normal position by a physical displacement of the throw-rod 3, a circuit would be established as follows: from battery 25, to ,bus bar 31, conductor 69, con

ductor 70, spring 67, contact 64, spring 68,

conductor 71, spring 72, contact73, spring is the motor shaft disconnected from the driven shaft 6 but in alinement therewith.

.Mounted on the motor shaft 111 and keyed thereto is a gear 393. Keyed on the driven shaft 6 is the internal gear 303. Mounted loosely on the hub of gear 303 and on the motor shaft 111 are two members 398 connected by pins 399 so as to cause them to move in unison. These pins are 180 apart. Mounted loosely on the pins 399 are sleeves 397. Mounted fast on each of the sleeves 397 are three pinions 394, 395 and 396. The pinion 394 receives motion from the gear 393 and meshes with the internal gear 303.

,The pinion 395 is of slightly greater dithem, and the sleeves 397, to rotate.

ameter than the gear 394, follows the motion of the sleeve 397 and meshes with the in ternal gear 308 of the pulley 791 The pinion 396 is of slightly less diameter than the pinion 394, follows the rotation of the sleeve 397 and meshes with the internal gear 302 of the pulley 110. The solenoids 76 and 108 are each provided with a core 112 connected by means of a link 200 to two levers forming a bell crank 113, which levers are pivotally supported on the center 201 and, one of which levers is longer than the other, as shown. The bands 78 and 109 pass around the drums 79 and 110, and-the free ends of said bands are connected to the'levers 113.

If the motor shaft 111 is now rotated and the shaft 6 held against rotation, the gear 393, meshing with the pinions 394 will cusle u lcys 79 and 110 being free to revolve, and the gear 303 being held against revolving movement, the pinions 394 will revolve by traveling on the internal gear 303 carrying the sleeves 397 and the members 398 with.

them. The rotation and revolution of the sleeve 397 and pinions 395 and 396, will diameter of the pinions 394, 395 and 396..

If now the shaft 6 is free to rotate and the magnet 76 is energized, the core 112 thereof will be withdrawn thereby turning the le-' vers 113 around the center 201 and tightening the band 78, so as to hold the pulley 79 immovable.

The rotation of the sleeves 397 and pinion 395 will cause the latter to travel on the rigidly held gear 308, causing the sleeves 397, pins 399 and members 398 to revolve. The pinion 394 will attempt to travel on gear 303, but since the peripheral 'speed of the pinion 394 is less than that of pinion 395, said pinion 394 will drag the ear 303 with it and cause it to revolve and with it the shaft 6.. The pulley 110 being movable will also revolve by the action on the pinion 396 on the internal gear 302.

Assume now that the shaft 6 is still free to rotate, that the magnet 76 is deenergized, the band 78 released, and the pulley 79 free to revolve. If the magnet 108 is now energized, the core 112 thereof will be withdrawn thereby turning the levers 113 around the center 201 and tightening the band 109 to hold the pulley 110 immovable. The rotation of the sleeves 397 and pinion 396 will cause the latter to travel on the rigidly held gear 302, causing the sleeves 397, pins 399 and members 398 to revolve, ,The pinion 394 will attempt to travel on gear 303, but

since the peripheral speed of the pinion 394 is greater than that of pinion 396, said pinbehind and will actually,

ion 394 will lag push back the gear 303, and cause it to re- .volve in the opposite direction and with it the shaft 6.

In order to return the cores 112 to their opposite directions by the rotation of the motor in one direction.

2. In a-system of switch control, a switch,

a motor rotating in one direction only, selective means for moving the switch inopposite directions by the rotation of the motor in one direction, and controlling means for supplying power to render the motor and selective means operative. r

. 3. In a system of switch control, a switch, a motor rotating in onedirection only, selec tive meansfor moving the switch in opposite directions by the rotationof the motor in one direction, and .means controlled by the position of the'switch for determining the direction of movement imparted to the switch by the selective means.

4. In a system-of switch control, a switch, a motor rotating in one direction only, selective means for" moving the switch in opposite y directions by the rotation of the motor in one direction, controlling means for supplying power to render the motor and selective means operative, and means controlled by, the position of the switch for determining the direction of movement imparted to the switch by the selective means.

till

a motor r'otatin in one direction'onl and driving connections including a difilerential transmission mechanism for moving the switch in opposite directions by the rotation of the motor in one direction,

1 7. In a s stem of switch control a switch, y a

a motor rotating in one direction only, driving connections including a diiderential transmission mechanism for moving the switch in opposite directions by the rotation of the motor in one direction, and controlling means'tor supplying power to render the motor and difit'erential transmission mechanism operative.

8. In a-system or switch control, a switch, a motor'rotating in one direction only, driving connections including a diderential transmission mechanism for moving the switch in opposite directions by the rotation of the motor in one direction, and means controlled by the position of the switch for determiningv the direction oi movement imparted to the switch by the difierential transmission mechanism,

9. In a system of switch control, a switch,

- a motor rotating in one direction only, driv.-'

ing connections including 'a ditlerential transmission mechanism for moving the switch in opposite directions by the rotation of the motor in one direction, and means controlled by the position of the switch for determining the direction of movement imparted to the switch by the difierential transmission mechanism.

ill. In a system of switch control, a switch, a motor rotating in one direction only, driving connections including a differential transmission mechanism between the motor and the switch for moving the switch in opposite directions by the rotation of the motor in one direction, two magnets for selectively operating the difierential transmission mechanism, controlling means and circuit connections for supplying current to the motor and magnets, and means controlled by the position of the switch for selecting the magnet to be energized.

11. lln a system of switch control, a switch,

a motor rotating in one direction only, selective connections between the motor and the 7 switch for moving the switch in opposite directions by the rotation of the motor in arsenic-o one direction, two are for rendering the selective connections operative, an auxiliary locking device, for the switch, and circuit connections for supplying current to the motor, controlling means and circuit connections for supplying current to the magnets and to the auxiliary locking device, and a circuit closer controlled by the position of the switch for selecting the magnet to be energized.

12. in asystem of switch control, a switch, a motor rotating in one direction only, selective connections between the motor and the switch for moving the switch in oppo site directions by the rotation oi the motor in one direction, two magnets for rendering the selective connections operative, an auze iliary locking device, for the switch, and circuit connections for supplying current to the motor, controlling means and circuit selectively operating the difierential trans mission mechanism, an auxiliary locking device, for the switch, and circuit connections for supplying current to the motor, controlling means and circuit connections for supitl plying current tothe maets and to the o auxiliary lock ng device, and a circuit closer controlled by the position of the switch selecting the magnet to be energized.

i l. In a system of switch control, aswitch,

a motor rotating in one direction only, driv. a 1

ing connections including a ditlerential transmission mechanism between the motor and the switch for moving the switch opposite directions by the rotation oil-the motor in one direction, two magnets for L selectively operating the dilierential transmission mechanism, an auxiliary locking device, tor the switch, circuit connections for supplying current to the motor, controlling means and circuit connections for supplying current to the maetsand to auxiliary "locng device, a circuit closer controlled by the position of the switch for selecting the magnet to be energized, and a controller actuated by the movement of the switch for cutting oh current from the controlling means.

15. In a system of switch control, aswitch, a motor rotating in one direction only, selective coections between the motor and the switch for moving the switch in opposite directions by the rotation of the motor in one direction, two magnets for rendering the selective connections operative, controlling means and circuit connections for supplying current to the motor and magnets, means controlled by the position of the switch for selecting the magnet to 'be energized, and a controller actuated by the movement of the switch for cutting oif current from the controlling, means.

16. In a system of switch control, a switch, a motor rotating in one direction only, driving connections including a differential transmission mechanism between the motor and the switch for moving the switch in opposite directions by the rotation of the motor in one direction, two magnets for selectively operating the differential transmission mechanism, controlling means and circuit connections for supplying current to the motor and magnets, means controlled by the position of the switch for selecting the magnet 'to be energized,.and a controller actuated by the movement of the switch for cutting off current from the controlling means.

17. In a system of switch control, a switch,

a motor rotating in one direction only, selective means for moving the switch in opposite directions by the rotation of the motor in one direction, and means for locking the switch when the motor is improperly supplied with power.

18. In a system of switch control, a switch, a motor rotating in one direction only, selective connections between the motor and the switch for moving the switch in opposite directions by the rotation of the motor in one direction, two magnets for rendering the selective connections operative, controlling means and circuit connections for supplying current to the motor and magnets,

means controlled by the position of the switch forselecting the magnet to be energized, and means for locking the switch when the motor and magnets are improperly supplied with power.

Signed, at Pittsburgh, in the county of Allegheny, and State of Pennsylvania this 21st day of July A. D. 1914.

GARDNER 1B. GRAY.

Witnesses:

Max H. Snonovrrz, GUY P. Trmnnm. 

